What is a hash generator?

A hash generator is a tool that creates cryptographic hash values from input data. It converts text or files into fixed-length hash strings using algorithms like MD5, SHA1, SHA256, or SHA512.

What are hash functions used for?

Hash functions are used for password storage, data integrity verification, file checksums, digital signatures, blockchain technology, and ensuring data hasn't been tampered with.

Is this hash generator secure?

Yes, our hash generator processes all data locally in your browser. No data is sent to our servers, ensuring complete privacy and security of your sensitive information.

🔐 Hash Generator

Generate MD5, SHA1, SHA256, and SHA512 hashes instantly. Perfect for passwords, data integrity, and security purposes.

MD5

SHA1

SHA256

SHA512

Enter text above and click "Generate Hashes" to see the results here

Which Hash Algorithm Should You Use?

MD5 (128-bit) — cryptographically broken. Never use for security. Acceptable for non-security checksums, cache keys, and content deduplication

SHA-1 (160-bit) — deprecated for security since 2017 (SHAttered attack). Non-security use only

SHA-256 (256-bit) — current industry standard. Use for file integrity, HMAC signing, JWT, code signing, and any security-sensitive hashing

SHA-512 (512-bit) — larger security margin, faster than SHA-256 on 64-bit CPUs. Use for maximum collision resistance

Common Use Cases

File integrity — compute SHA-256 of a downloaded file; compare to the publisher's hash to detect tampering

HMAC signing — HMAC-SHA256 authenticates API requests and signs JWT tokens

Cache keys — hash request parameters to create a compact, unique cache key

Deduplication — hash file content to find identical files without byte-by-byte comparison

Can I hash passwords with SHA-256?

No. SHA-256 is too fast — GPUs compute billions of SHA-256 hashes per second. For passwords, use bcrypt, scrypt, or Argon2id — algorithms designed to be deliberately slow and memory-intensive, making brute-force attacks impractical.

Is MD5 still useful?

MD5 is cryptographically broken and unsuitable for any security purpose. It is still useful for non-security checksums, generating cache keys, or deduplicating content in trusted environments where a collision attack is not a concern.

What is the difference between a hash and encryption?

Hashing is one-way — you cannot reverse a hash to recover the input. Encryption is two-way — data encrypted with a key can be decrypted. Use hashing for integrity verification; use encryption when you need to recover the original data.